ICL3241EIAZ

Overview

The ICL3241EIAZ is a single-driver, five-receiver RS-232 transceiver manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 500 kb/s. The device features ±15 kV electrostatic discharge (ESD) protection on both transmitter outputs and receiver inputs, complying with IEC61000-4-2 standards. It utilizes an efficient onboard charge pump requiring only 0.1 µF external capacitors. The component is housed in a 28-pin SSOP package and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides full compliance with EIA/TIA-232 and V.28/V.24 specifications at low supply voltages.
• Integrates robust ±15 kV ESD protection on all RS-232 pins for enhanced signal integrity.
• Features manual shutdown mode that reduces standby power consumption to microampere levels.

Applications

• Portable computing devices such as laptops and notebooks requiring serial connectivity.
• Personal digital assistants (PDAs) and handheld computers with space constraints.
• Industrial control systems utilizing RS-232 communication protocols.

Procurement Notes

Verify the specific suffix 'IAZ' corresponds to the SSOP-28 package and tape-and-reel or cut-tape availability when sourcing from distributors. Confirm RoHS compliance status and moisture sensitivity level (MSL) ratings prior to PCB assembly planning. Ensure the ordering quantity matches the manufacturer's standard packaging configuration to avoid handling discrepancies during production integration.

Selection Notes

Select this component when a design requires a single driver and multiple receivers for complex RS-232 bus topologies. It is suitable for systems needing high ESD immunity without external protection circuits. Consider alternative models if higher data rates exceeding 500 kb/s are required or if a different pin count better fits the board layout constraints.

Part Context

This part belongs to the Intersil ICL32xE series of low-power RS-232 transceivers, now managed under Renesas Electronics. The series is designed for portable applications where power efficiency and small form factors are critical. The ICL3241 variant specifically addresses configurations needing one transmit channel and five receive channels, differing from other family members like the ICL3244 which offers three drivers.

Replacement Considerations

The ICL3244EIAZ serves as a functional substitute for designs requiring additional driver channels while maintaining similar electrical characteristics and package dimensions. Verify pin compatibility and ensure the application does not strictly require the single-driver limitation of the ICL3241 before swapping components.